Photosynthetic Mechanism of Algae in Response to Iron Deficiency Stress: Research Progress

doi:10.11924/j.issn.1000-6850.casb2021-1142

Abstract

Abstract:

In order to deep understand the effect of iron deficiency stress on photosynthesis in algae, the authors summarized the important role of iron in photosynthetic electron transport chain, and concluded the destruction effect of iron deficiency on photosynthetic elements and the photosynthetic response mechanism of algae. Focused on the photosynthetic electron transport chain, the photosynthetic elements which were easily affected by iron deficiency, such as chlorophylls, photosystems and light-harvesting antennas, were summarized. This study concluded that iron deficiency stress could severely damage chlorophyll biosynthesis and affect the contents, activity and protein stability of photosystem I (PSI), photosystem II (PSII) and their peripheral light-harvesting antennas in algae. Algae can adjust the structure and function between the photosystems and their peripheral light-harvesting antennas by generating new iron-inducible proteins or functional replacement proteins around PSI/PSII to cope with iron deficiency stress.

Key words: iron deficiency stress, photosynthesis, iron-inducible protein, photosystem I, light-harvesting antennas

CLC Number:

S184

XU Mingyu, BAI Tianyu, WANG Jiayue, TIAN Lirong. Photosynthetic Mechanism of Algae in Response to Iron Deficiency Stress: Research Progress[J]. Chinese Agricultural Science Bulletin, 2022, 38(17): 35-43.

Figures/Tables 4

References 83

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物种	光合响应元件	主要功能	参考文献
蓝细菌(Synechocystis sp. PCC 6803)	IsiA IsiB	在铁限制条件下作为PSI天线替代含铁的铁氧还蛋白进行电子传递	[30]、[31]、[32]、[33] [34]、[35]、[36]
蓝细菌(S. elongatus PCC 6301)	IdiA	保护PSII受体侧免受氧化应激	[37]、[38]、[39]
盐生杜氏藻(Dunaliella salina)	Tidi	帮助PSI捕获光能	[40]
衣藻(Chlamydomonas reinhardtii)	LHCI PsaC/PsaD PsaE LhcSR3	帮助PSI捕获光能 PSI中FA和FB的载脂蛋白稳定PsaC和PSI核心之间的相互作用参与NPQ过程,保护光合装置免受氧化损伤	[41] [42] [42] [43]、[44]
硅藻(Phaeodactylum tricornutum) (Thalassiosira oceanica)	PSI Cyt b₆f	将光能转化为化学能介导PSII和PSI之间的电子传递,缺铁时PSI和Cyt b₆f表达量下调	[45] [28]、[46]、[47]

物种	光合响应元件	主要功能	参考文献
蓝细菌(Synechocystis sp. PCC 6803)	IsiA IsiB	在铁限制条件下作为PSI天线替代含铁的铁氧还蛋白进行电子传递	[30]、[31]、[32]、[33] [34]、[35]、[36]
蓝细菌(S. elongatus PCC 6301)	IdiA	保护PSII受体侧免受氧化应激	[37]、[38]、[39]
盐生杜氏藻(Dunaliella salina)	Tidi	帮助PSI捕获光能	[40]
衣藻(Chlamydomonas reinhardtii)	LHCI PsaC/PsaD PsaE LhcSR3	帮助PSI捕获光能 PSI中FA和FB的载脂蛋白稳定PsaC和PSI核心之间的相互作用参与NPQ过程,保护光合装置免受氧化损伤	[41] [42] [42] [43]、[44]
硅藻(Phaeodactylum tricornutum) (Thalassiosira oceanica)	PSI Cyt b₆f	将光能转化为化学能介导PSII和PSI之间的电子传递,缺铁时PSI和Cyt b₆f表达量下调	[45] [28]、[46]、[47]